Philips L03.2L AA Service Manual page 29

EN 28 8. L03.2L AA
max.
0V Ref.
Figure 8-2 V_cutoff
Table 8-1 Vg2 alignment values
Screen Size Cut-off point (V)
14RF +135 V ± 4 V
20RF +140 V ± 4 V
8.2.2 Focusing
1. Connect the RF output of a video pattern generator to the
antenna input.
2. Input a circle or crosshatch test pattern to the television set.
3. Press the SMART PICTURE button on the remote control
transmitter repeatedly to choose NATURAL (or MOVIES)
picture mode.
4. Adjust the FOCUS potentiometer (see figure "Top view
family board") until the vertical lines near the left and right
sides of the screen, and near the horizontal center of the
screen, are at minimum width without visible haze.
8.3 Software Alignments and Settings
The following options are performed in the Service Default
Alignment Mode (SDAM). SDAM is described in the "Service
Modes, Error Codes and Fault Finding" section.
The following alignments are explained:
1. OPTIONS
2. TUNER
3. WHITE TONE
4. GEOMETRY
5. AUDIO
8.3.1 OPTIONS
Options are used to control the presence or absence of certain
features and hardware.
Note: Each option byte controls several features of the
television set; therefore, before changing option byte
information, it is important to record the current option byte
values. This ensures that the television features can be
restored to the original settings, if necessary.
How to Change an Option Byte
An Option Byte represents a number of different options.
Changing these bytes directly makes it possible to set all
options very fast. All options are controlled via seven option
bytes. Select the option byte (OP 1.. OP 7) with the MENU UP/
DOWN keys, and enter the new value.
1. Activate SDAM by pressing the following key sequence on
the remote control transmitter: 0 6 2 5 9 6 directly followed
by the MENU button (do not allow the display to time out
between entries while keying the sequence).
2. Use the MENU UP/DOWN keys to highlight the OPTIONS
sub menu.
3. Press the MENU LEFT or MENU RIGHT key to enter the
OPTIONS sub menu.
Alignments
V [V ]
CUTOFF DC
CL 06532130_014.eps
131000
4. In the OPTIONS sub menu, press the MENU UP/DOWN
keys to select 'OP 1' through 'OP 7'.
5. Use the number keys on the remote control transmitter to
enter a new value for the selected option byte. The value
must be entered as a three-digit value (for example, '4'
would be entered as '0 0 4').
6. The selected value must be between '0' and '255'.
7. When all desired changes to the option bytes are made,
press the MENU button to return to the top level SDAM
menu. This will save changes to the option byte settings.
8. To ensure the option byte changes take effect:
– Turn the television set 'off' by using the 'POWER'
button on the remote control transmitter or the local
keyboard.
– Disconnect the television set from AC power for at
least ten seconds.
– Reconnect the television set to AC power.
– Turn the television set 'on' by using the 'POWER'
button on the remote control transmitter or the local
keyboard.
Leaving the OPTION submenu saves the changes in the
Option Byte settings. Some changes will only take effect after
the set has been switched OFF and ON with the mains switch
(cold start).
How to Calculate the Value of an Option Byte
Calculate an Option Byte value (OP 1 .. OP 7) in the following
way:
1. Check the status of the single option bits (OB): are they
enabled (1) or disabled (0).
2. When an option bit is enabled (1), it represents a certain
value (see first column "value between brackets" in table
below). When an option bit is disabled, its value is 0.
3. The total value of an Option Byte is formed by the sum of
its eight option bits. See second table below for the correct
Option Bytes per type number.
Bi t OP1 OP2 OP3
(val ue)
0 (1) OB10 OB20 OB30
1 (2) OB11 OB21 OB31
2 (4) OB12 OB22 OB32
3 (8) OB13 OB23 OB33
4 (16) OB14 OB24 OB34
5 (32) OB15 OB25 OB35
6 (64) OB16 OB26 OB36
7 (128) OB17 OB27 OB37
Total: Sum Sum Sum
Figure 8-3 Option Byte calculation
Table 8-2 Options settings
Typenumber OP1 OP2 OP3 OP4 OP5 OP6 OP7
14PT3005/44 01 215 67
14PT3005/55 01 215 67
21PT3005/55 01 215 67
21PT3205/44 01 215 67
21PT3205/55 01 215 67
Option Bit Assignment
Following are the option bit assignments for all L03 software
clusters.
OP4 OP5 OP6 OP7
OB40 OB50 OB60 OB70
OB41 OB51 OB61 OB71
OB42 OB52 OB62 OB72
OB43 OB53 OB63 OB73
OB44 OB54 OB64 OB74
OB45 OB55 OB65 OB75
OB46 OB56 OB66 OB76
OB47 OB57 OB67 OB77
Sum Sum Sum Sum
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160603
160 192 201 64
160 192 201 64
161 192 201 64
161 192 201 64
161 192 201 64